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ELAD SDR transceiver

FDM-DUO from Elad (Italy) Nouveau

Elad FDM-DUO

A SDR transceiver with 5 W output that can operate as a stand-alone without a PC!

The small transceiver is equipped with the latest SDR technology: A fast analog-digital-converter samples the received HF directly into digital signals and a downstream DSP module provides for filtering and processing. Another ARM processor handles the signals of the control unit.

One highlight of the FDM-DUO is the possibility to use it standalone without a computer also. Then, this transceiver is a perfect companion for the QRP fan, so that you can have a modern SDR with you even on holidays. The controls are very easy to use for a portable QRP transceiver. In addition to a big VFO knob there are two smaller knobs for volume and filter-center/width (amongst others). Six buttons below the well readable LC-display access the most important functions directly. Less frequently used settings are available via menu system.

Connected to a PC, FDM-DUO is a very modern SDR receiver and transmitter with capabilities which are usually available in very large large radios only.

Together with a computer the possibilities for the FDM-DUO are extended quite considerably of course. Three(!) USB 2.0 interfaces offer a wide range of possibilities. One interfaces works as a CAT controller, another one provides digital I/Q data for the waterfall diagram, and the third USB port serves as a external sound card for the PC! This way the FDM-DUO can be used for digital modes such as RTTY, PSK31 etc. By distributing these functions to three separate USB interfaces the handling for the user is made much easier, in most cases no additional USB drivers are required.

The FDM-DUO has two configurable antenna jacks: RX/TX on the same jack, or RX and TX on one jack each.

Specifications

FDM-DUO

Gamme de fréquence RX

9 kHz - 52 MHz RX direct sampling

Gamme de fréquence Tx

only amateur bands 160 to 6m

Output power

5 W on amateur bands or 0 dBm HF-Output

Connecteurs

2x antenna jacks PL (RX/TX or separate RX/TX)

Exciter Output

0dBm, 100 kHz - 54 MHz

Frequency Oscillator

TCXO 10MHz

Frequency stability

FIXME

Stand-alone modes (w/o PC)

CW, USB, LSB, AM, FM

CAT

USB interface with FTDI controller

Poids

1200g

Size incl. controls

180 × 155 × 70 mm

Included in the shipment of the FDM-DUO is:

3 × USB A/B cable

1 × USB adaptor to USB Micro-B

2 × Audio cable stereo 3.5 mm phone plug

1 × Audio extension cable stereo 3.5 mm phone plug

1 × DC power cable with connector, other side open

1 × 9 pin D-Sub plug

1 × USB stick with FDM-SW2 Software, handbooks in english and italian (PDF)

FDM-DUO CW Demo Video

A customer asked us about the behaviour of the FDM-DUO in telegraphy when transmitting, especially about a possible latency when keying and the noise of the transmit relay. We took the opportunity to produce this simple video.

Obviously the microphone of the camera (in 20cm distance) is very sensitive in that audio range, so the click of the transmit relay is more present than it actually is. In reality the click is not disturbing at all, it is not louder than with other transceivers in this size. There was no discernible latency when keying the radio, noot even in Full BK. Perhaps the AGC setting could be improved for Full BK.